I had an interview with Terry Payne of Radio Times in late January 2012, when I visited London. While there are a few inaccuracies (I don’t work in schools for native Americans), on the whole it is fairly accurate.
The print article (sent to me courtesy of National Geographic) has a picture of Josef, myself and the envelope containing Josef’s last letter. You can read the digital article here (N.B. 2021 – link no longer works)